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Who owns Fuel Tech (FTEK) stock

45 funds reported Fuel Tech (FTEK) shares in their latest 13F filings, worth $16.5M in all. The largest holder is Grace & White ($2.5M). Last quarter 15 funds added to their stakes and 16 cut them.

Largest holders of FTEK (13F)Largest holders of FTEK (13F)Grace & White$2.5MRenaissance Technologies LLC$2.4MVanguard Capital Management LLC$2.2MVanguard Group$1.8MPeapod Lane Capital LLC$1.2MGeode Capital Management, LLC$1.2MBlackRock$1.1MUS Bancorp$674KGSA Capital Partners LLP$652KTwo Sigma Investments, LP$372K

Largest holders (13F)

FundSharesValueChangeQuarter
Grace & White1,541,307$2.5Munchanged2026-09-30
Renaissance Technologies LLC1,102,406$2.4Mdecrease2026-06-30
Vanguard Capital Management LLC1,005,701$2.2Mincrease2026-06-30
Vanguard Group1,126,003$1.8Mincrease2025-12-31
Peapod Lane Capital LLC765,119$1.2Mdecrease2026-09-30
Geode Capital Management, LLC522,983$1.2Mdecrease2026-06-30
BlackRock496,493$1.1Mincrease2026-06-30
US Bancorp304,776$674Kunchanged2026-06-30
GSA Capital Partners LLP295,141$652Kincrease2026-06-30
Two Sigma Investments, LP168,457$372Kdecrease2026-06-30
Beartown Capital Management, LLC146,689$324Kunchanged2026-06-30
Vanguard Fiduciary Trust133,459$295Kincrease2026-06-30
State Street121,846$269Kunchanged2026-06-30
Jane Street Group, LLC109,483$242Kincrease2026-06-30
Integrity Wealth Advisors135,000$219Kincrease2026-09-30

Fuel Tech's latest quarter

Fuel Tech, Q3 2026: revenue $8.7M (+16% year over year), operating margin -6.0%, net loss $267K, operating cash flow −$1.7M. The chart follows the revenue to costs, profit and cash.

Questions

Who owns the most FTEK stock?

By the latest 13F filings: Grace & White ($2.5M); Renaissance Technologies LLC ($2.4M); Vanguard Capital Management LLC ($2.2M); Vanguard Group ($1.8M); Peapod Lane Capital LLC ($1.2M).

What is the short interest in FTEK?

84,968 shares were sold short at the 2026-10-15 settlement, -58.96% of the float.

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Updated Nov 8, 2026. Read automatically from SEC filings and public data; errors are possible. Not investment advice.